Add a mesh from a list of locations, rotations and scales?
Not sure of an addon like that but you can easily create your own script. The following creates new objects using the same mesh data and positions them with your data.

import bpy

scn = bpy.context.scene
orig_data = bpy.data.objects['Cube'].data

obj_specs = [
        [(1.32, 3.434, 4.4), Euler((24.1, 32.1, 0.0), 'XYZ'), (1.2, 1.3, 0.75)],
        [(12, 32.4, -32.2), Euler((0.0, 90.0, 32.45), 'XYZ'), (0.8, 1.0, 1.2)],
]

for loc,rot,scl in obj_specs:
    new_obj = bpy.data.objects.new("newObj", orig_data)
    new_obj.location = loc
    new_obj.rotation_euler = rot
    new_obj.scale = scl
    scn.objects.link(new_obj)

scn.update()